Quarterly report pursuant to Section 13 or 15(d)

Mandatory Redeemable Series B Preferred Stock (Details)

v3.19.3
Mandatory Redeemable Series B Preferred Stock (Details) - USD ($)
$ / shares in Units, $ in Millions
 9 Months Ended
Sep. 30, 2019
Jun. 05, 2019
May 30, 2019
Apr. 26, 2018
Class of Stock [Line Items]        
Share price (in usd per share)       $ 2.72
Warrants expiration period 5 years   7 years  
Mandatorily Redeemable Preferred Stock        
Class of Stock [Line Items]        
Warrant to purchase shares (in shares) $ 1.62      
Exercise price of warrants (in usd per share) $ 1.62      
Investment warrants closing price (in usd per share)     $ 1.60  
Value of warrants issued with preferred stock $ 6.7      
Maximum | Mandatorily Redeemable Preferred Stock        
Class of Stock [Line Items]        
Exercise of warrants (percentage) 19.90%      
Mandatory Redeemable Series B Preferred Stock        
Class of Stock [Line Items]        
Shares issued (in shares)   1,250,000    
Preferred stock stated value (in usd per share)   $ 20.00    
Aggregate purchase price, warrants   $ 25.0    
Mandatory Redeemable Series B Preferred Stock | Mandatorily Redeemable Preferred Stock        
Class of Stock [Line Items]        
Warrant to purchase shares (in shares)   $ 7.41    
Preferred stock dividend rate (percentage) 8.00%      
Exercise price of warrants (in usd per share)   $ 7.41    
Common Stock | Mandatorily Redeemable Preferred Stock        
Class of Stock [Line Items]        
Share price (in usd per share) $ 1.62